Patent US3434222A successfully refreshed from Google Patents.
US3434222A
Expired / Lapsed
US
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Method and an apparatus for the drying of wood in a channel
Assignee: Svenska Flaktfabriken AB
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Filing: 1967-08-03
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Granted: 1969-03-25
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Expires: 1987-08-03
Abstract
No abstract record available.
Inventors
- 👤 Lars Malmquist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:06
CPC Classifications
F; F26; F26B; F26B21/00; F26B21/30; F26B15/00; F26B15/10; F26B15/12; F26B21/20; F26B21/202; F26B21/25; F26B2210/00; F26B2210/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1598980A
Cited
US2202143A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-24 | 1972-09-23 | 1973-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-24 | 1976-09-23 | 1977-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-24 | 1980-09-23 | 1981-03-25 | $7700.00 | Window Closed / Lapsed |